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Single Family ResidenceResidential
$324,900$191 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 96How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $255,000 on May 8, 2019

521 TREASURE DR

OSWEGO, IL 60543
3
Beds
2.5
Baths
1,699 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
0.23 ac
Lot SizeThe size of the land the home sits on, from county records.
2001
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$325K
$311K low$339K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$255,000 · May 8, 2019

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,505 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$118,510 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$31,468
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$87,042
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$105,812
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$355,530

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.5
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
1
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
27
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Bi-Level
CountyKENDALL
Lot (acres)The size of the land the home sits on, from county records.0.23
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
CoolingThe type of cooling or air conditioning in the home.Central
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(2)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(2)

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

H
Oswego East High SchoolB+
High · Grades 9–12 · 0.5 mi
E
Churchill Elementary SchoolA-
Elementary · Grades KG–5 · 1.0 mi
M
Plank Junior High SchoolC+
Middle · Grades 6–8 · 1.1 mi

District: Oswego Community Unit School District 308

Neighborhood · ZIP 60543These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.72
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.88
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.51

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.24%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.1%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.6%
PopulationHow many people live in this area.49,227
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,097 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$116,485
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$134,927
Average tempThe average temperature here across a full year.49°F
Annual precipHow much rain and melted snow falls here in a typical year.37 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.54%

Owner Tools

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

521 Treasure Dr measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Worth less than 76% of homes in Oswego 60543
  • Smaller than 67% of homes in Oswego 60543
  • Has a smaller lot than 65% of homes in Oswego 60543

What homes are worth in Oswego 60543

Each bar is how many homes fall in that price range. The marker is this home.

This home
$213K$742K

This home is worth more than 24% of homes in Oswego 60543.

How it measures up in Oswego 60543

The dot is this home. The mark in the middle is the typical home in Oswego 60543.

Estimated value$324,900
CheaperTypical $420,835Pricier

Pricier than 24% of homes nearby

Price per ft²$191
CheaperTypical $196Pricier

Pricier than 43% of homes nearby

Living area1,699 ft²
SmallerTypical 2,132 ft²Bigger

Bigger than 33% of homes nearby

Lot size0.23 ac
SmallerTypical 0.25 acBigger

Bigger than 35% of homes nearby

Year built2001
OlderTypical 2001Newer

Newer than 53% of homes nearby

How 521 Treasure Dr ranks against every home in each area.
MeasureThis homeOswego 60543Kendall County
Estimated valuepricier than$324,90024% of homes31% of homes
Price per ft²pricier than$19143% of homes47% of homes
Living areabigger than1,699 ft²33% of homes37% of homes
Lot sizebigger than0.23 ac35% of homes40% of homes
Year builtnewer than200153% of homes44% of homes

About 521 Treasure Dr

How much is 521 Treasure Dr, Oswego, IL worth?

The TopHap Estimate for 521 Treasure Dr, Oswego, IL is $324,900 as of Sep 24, 2026. The likely range is $311,179 to $338,621. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 521 Treasure Dr, Oswego, IL last sell?

521 Treasure Dr, Oswego, IL last sold on May 8, 2019 for $255,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 521 Treasure Dr, Oswego, IL?

521 Treasure Dr, Oswego, IL has 3 bedrooms, 2.5 bathrooms, 1,699 square feet of living space and a 0.23-acre lot.

When was 521 Treasure Dr, Oswego, IL built?

521 Treasure Dr, Oswego, IL was built in 2001, making it 25 years old. It is a bi-level home. The building has 2 stories.

What schools serve 521 Treasure Dr, Oswego, IL?

521 Treasure Dr, Oswego, IL is assigned to Oswego East High School (high), rated B+; Churchill Elementary School (elementary), rated A-; Plank Junior High School (middle), rated C+. All sit in Oswego Community Unit School District 308. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 521 Treasure Dr, Oswego, IL compare to other homes in Oswego 60543?

Among the 13,621 homes in Oswego 60543, it is worth more than 24% of them ($324,900 against a typical $420,835), its price per square foot is higher than 43% of them ($191 against a typical $196), it is bigger than 33% of them (1,699 ft² against a typical 2,132 ft²), its lot is bigger than 35% of them (0.23 ac against a typical 0.25 ac) and it is newer than 53% of them (2001 against a typical 2001). Measured against all of Kendall County, it is worth more than 31% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 521 Treasure Dr, Oswego, IL?

The 2025 property tax bill for 521 Treasure Dr, Oswego, IL was $8,505. The county assessed it at $118,510.

More homes on Treasure Dr

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Assigned schools

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